ASTM B111 C10200 oxygen-free copper is a key copper material classification under the ASTM standard. Like C10100, it belongs to the same family of high-purity oxygen-free copper grades, but with specific composition standards and performance characteristics. As a representative of high-purity copper for electrical applications, C10200 plays a key role in the era of electrification.
Basic Characteristics of ASTM B111 C10200 Oxygen-Free Copper
C10200 oxygen-free copper has a copper content of ≥99.95% and an oxygen content of ≤0.0005%. Key parameters include:
Density: 8.96 g/cm³ (20°C)
Melting Point: 1083°C
Resistivity: 0.01707 Ω·mm²/m (20°C)
Thermal Conductivity: 398 W/(m·K)
Tensile Strength: 210-240 MPa
Elongation: ≥35%
ASTM B111 Key Differences Between C10200 and C10100 Copper Water Pipes
Purity Grade: C10200 copper content ≥99.95%, slightly lower than the 99.99% standard for C10100.
Conductivity: Resistivity is approximately 1% lower than C10100, with actual conductivity reaching 101% IACS.
Production Process: Typically produced using continuous casting and rolling, which is more cost-effective than the vacuum melting process used for C10100.
Application Focus: More suitable for cost-sensitive applications such as large-section conductors and power transmission.
Typical Applications of ASTM B111 C10200 Oxygen-Free Copper
Power Transmission
Power Transmission:
High-voltage cable conductors (especially for ultra-high voltage lines above 500 kV)
Substation busbars
Transformer winding materials
Electrified railway contact lines
Electronic Manufacturing:
Electrolytic copper foil substrates for PCBs
Semiconductor lead frames
Inner conductors for vacuum electronic devices
Inner conductors for high-frequency coaxial cables
Special Applications:
Superconducting magnet stabilization substrates
Particle accelerator high-frequency cavities
First-wall materials for nuclear fusion devices
ASTM B111 Key Processing Techniques for C10200 Seamless Copper Tubes
Cold Working: Annealed hardness HV50-65, reaching HV100-120 after cold rolling. The processing rate must be controlled at ≤85%.
Heat Treatment: Recrystallization annealing temperature 450-650°C, oxygen content in the protective atmosphere must be <10 ppm.
Joining Process: Diffusion welding (temperature 500-800°C, pressure 10-50 MPa) or electron beam welding is recommended.
Surface Treatment: Chemical polishing (phosphoric acid + hydrogen peroxide system) or nickel/silver electroplating are available.
With the acceleration of global electrification, the use of C10200 in new energy sectors such as wind power (each 5MW unit requires approximately 3 tons) and photovoltaic power plants (1GW power plant requires 1,200 tons) is growing at an annual rate of 15%. Its balanced high electrical conductivity and relative cost-effectiveness make it a key material in the green energy transition.
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As a professional enterprise dedicated to global copper product, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests.
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